Journal
MOLECULAR PHYSICS
Volume 110, Issue 17, Pages 2103-2109Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/00268976.2012.699640
Keywords
optical parametric oscillator; frequency stabilization; sub-Doppler spectroscopy
Funding
- Regione Toscana through the project SIMPAS
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We present a narrow-linewidth, singly-resonant cw optical parametric oscillator, emitting more than 1 W in the 2.7-4.2 mu m range. The OPO is pumped by a narrow linewidth (40 kHz) fibre-laser system and the signal frequency is locked to a high-finesse Fabry-Perot cavity in order to increase the spectral resolution, thus obtaining a residual linewidth of 70 kHz for the signal. We tested the spectral performance of our OPO on several transitions in the nu(1) rovibrational band of CH3I, measuring line intensities and showing sub-Doppler dip detection.
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